There are many different reasons why a person chooses and loves a certain pen. For us Asians, besides the design and material, color is the top concern. It is not just a personal preference, it also plays an important role in feng shui, you must make sure that the color you choose does not conflict with the five elements color corresponding to your age.
For example, this version of Starwalker Cool Blue, the whole body is covered in many shades of blue. A blue pen like this will be compatible with those of the Water element, compatible with those of the Wood element, and definitely not suitable for those of the Fire element.
Besides, this Cool Blue pen model has a quite modern design. If you are a lover of this new beauty of the Starwalker line, this will definitely be a reasonable choice.
